How to make .OCX file from Visual Studio ?

Dear Experts,

I use WinCC V7.X I don't know about what is the .OCX file ?

What is the ActiveX meaning ?

How to make .OCX file from MS Visual Stduio software ?

Can copy the visual basic source code in Visual studio in order to use in WinCC VBS-Editor ?

Best Regards,

Vorapob

vorapob

Dear Experts,

I use WinCC V7.X I don't know about what is the .OCX file ?

What is the ActiveX meaning ?

How to make .OCX file from MS Visual Stduio software ?

Can copy the visual basic source code in Visual studio in order to use in WinCC VBS-Editor ?

Best Regards,

Vorapob

1) What is .OCX?

.OCX is the file extension for ActiveX components. Actually it is a .DLL but MS give back this filename extension in the VB v4.x  to make it more clear to VB programmers that its a DLL that contains controls.

2) What is ActiveX meaning?

ActiveX is, basically, a framework for COM (Component Object Model) and OLE (Object Linking and Embedding). Basically is a way to encapsulate objects with certain functions and reuse code. In a practical way is a set of controls "like a library".

Here you can find some good links about the uses and how to create your own:

- Sample program: creating your own ActiveX control element

- Incorporating user DLLs in WinCC

- Incorporating ActiveX elements into WinCC Graphics Designer

- Why can't you use some of the installed ActiveX components in your project?

- Example with .OCX that connects to MSSQL databases

Dear Mr. Gilson Davi,

As 

https://support.industry.siemens.com/cs/ww/en/view/8301801

I use WinCC V7.0 SP3 I try to register T1_C.dll file but it can not register.

What 's wrong for this matter ?

Best Regards,

Vorapob

vorapob

Dear Mr. Gilson Davi,

As 

https://support.industry.siemens.com/cs/ww/en/view/8301801

I use WinCC V7.0 SP3 I try to register T1_C.dll file but it can not register.

What 's wrong for this matter ?

Best Regards,

Vorapob

 Hello Vorapob!

First of all, the example of "T1_C.dll" is about using functions from DLLs in WinCC as C functions (in the example you can see that the function "aufruf1" was called externally) and not importing ActiveX controls. In this case you dont need to register the DLL, just point to it at "#pragma code path_to_your_DLL".

If you use a correct .ocx then you should first make windows recognize it, (like this example), and then register it on WinCC.